Merge pull request #4 from Ward727a/v2

V2 merge

Author: Ward727a

addons/datatable_godot/common/backup.gd

@@ -0,0 +1,147 @@
+@tool
+extends _dt_common
+class_name _dt_backup
+
+## Class that manage all the backup system
+
+static var _INSTANCE: _dt_backup
+
+static func delete():
+	_INSTANCE = null
+
+
+var _folder: String
+var _max: int
+var _suffix: String
+
+var _index: int = 0
+var _most_recent_path: String
+
+static func get_instance() -> _dt_backup:
+	
+	if !_INSTANCE || _dt_plugin.get_instance().get_dev_reset_instance() == "true":
+		_INSTANCE = _dt_backup.new()
+	
+	_INSTANCE.load_var()
+	return _INSTANCE
+
+# Init
+
+func load_var():
+	
+	var config = _dt_plugin.get_instance()
+	
+	_folder = config.get_backup_path()
+	_max = int(config.get_backup_max())
+	_suffix = config.get_backup_suffix()
+
+# Backend
+
+func get_path():
+	return _folder
+
+func get_max():
+	return _max
+
+func make(path: String):
+	
+	if _dt_plugin.get_instance().get_dev_stop_backup() == "true":
+		WARNING("Can't make backup as the dev config 'stop_backup' is on true!")
+		return
+	
+	if !_check_path(path):
+		ASSERT_ERROR("Error in the path, can't make a backup!")
+		DEBUG(str("Path: ", path))
+		return
+	
+	var data = load(path)
+	
+	var file_name = _get_file_name(path)
+	
+	if file_name.is_empty():
+		DEBUG(str("packedData: ", data, " file_name: ", file_name, " path: ",path))
+		ASSERT_ERROR("File name is empty, cancelling backup")
+		return
+	
+	var index = _get_index(path)
+	
+	var backup_file_path = str(_folder, "/", file_name, _suffix, index, _dt_plugin.get_instance().get_file_ext())
+	
+	if !_has_dir():
+		return
+	
+	var err = ResourceSaver.save(data, backup_file_path)
+	
+	if err != OK:
+		DEBUG(str("packedData: ", data, " file_name: ", file_name, " file_path: ", backup_file_path, " path: ",path))
+		ASSERT_ERROR("Couldn't create backup file!")
+	else:
+		print_rich("[color=lightgreen][DataTable] Created a backup for '",file_name,"' collection, path: ",backup_file_path)
+
+func link(timer: Timer, path: String):
+	
+	DEBUG("Link timer to backup system")
+	
+	if timer.timeout.get_connections().has(make):
+		DEBUG("Disconnect already connected func")
+		timer.timeout.disconnect(make)
+	
+	timer.timeout.connect(make.bind(path))
+	timer.start()
+
+
+func _get_file_name(path: String)->String:
+	
+	var file_name
+	
+	if path.ends_with(".tableCollection.res"):
+		var path_splitted = path.split(".tableCollection.res")
+		path_splitted = path_splitted[0].split("/")
+		file_name = path_splitted[path_splitted.size()-1]
+	else:
+		var path_splitted = path.split(".res")
+		path_splitted = path_splitted[0].split("/")
+		file_name = path_splitted[path_splitted.size()-1]
+	
+	return file_name
+
+func _check_path(path: String)->bool:
+	
+	if path == null || path.is_empty():
+		ASSERT_ERROR("Can't make a backup of an empty path")
+		return false
+	
+	if path.contains(_folder):
+		ASSERT_ERROR("Can't make a backup of a backup file")
+		return false
+	
+	return true
+
+func _get_index(path: String)->int:
+	
+	_index += 1
+	
+	if _index > _max:
+		_index = 1
+		return 1
+		
+	if _most_recent_path != path:
+		_index = 1
+		_most_recent_path = path
+		return 1
+	
+	return (_index)
+
+func _has_dir()->bool:
+	var backup_dir = DirAccess.open("res://")
+	
+	var dir_path = _folder.replace('res://', "")
+	
+	if !backup_dir.dir_exists(dir_path):
+		var make_err = backup_dir.make_dir(dir_path)
+		
+		if make_err != OK:
+			ASSERT_ERROR(str("The plugin couldn't create the '",dir_path,"' folder in the path: 'res://', the back-up system can't work without it!"))
+			return false
+	
+	return true